हिंदी

State any two limitations of Bohr’s model for the hydrogen atoms. - Physics

Advertisements
Advertisements

प्रश्न

State any two limitations of Bohr’s model for the hydrogen atoms. 

टिप्पणी लिखिए

उत्तर

Two limitations of Bohr’s model for hydrogen atom:

  1. Bohr’s model for hydrogen atoms could not explain the line spectra of atoms other than hydrogen. Even for hydrogen, a more accurate study of the observed spectra showed multiple components in some lines which could not be explained on the basis of this model.
  2. It could not explain the varying intensity of emission lines. 
shaalaa.com
Bohr’s Atomic Model
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 15: Structure of Atoms and Nuclei - Short Answer I

APPEARS IN

एससीईआरटी महाराष्ट्र Physics [English] 12 Standard HSC
अध्याय 15 Structure of Atoms and Nuclei
Short Answer I | Q 3

संबंधित प्रश्न

Answer in one sentence:

Name the element that shows the simplest emission spectrum.


For the hydrogen atom, the minimum excitation energy ( of n =2) is ______


What is the energy of an electron in a hydrogen atom for n = ∞?  


Starting with 𝑟 = `(ε_0h^2n^2)/(pimZe^2),` Show that the speed of an electron in nth orbit varies inversely to principal quantum number. 


State Bohr's second postulate for the atomic model. Express it in its mathematical form.  


Using de Broglie’s hypothesis, obtain the mathematical form of Bohr’s second postulate.


Derive an expression for the radius of the nth Bohr orbit for the hydrogen atom.


Calculate the shortest wavelength in the Paschen series if the longest wavelength in the Balmar series is 6563 Ao


How the linear velocity 'v' of an electron in the Bohr orbit is related to its quantum number 'n'?


Using Bohr's model, the orbital period of electron in hydrogen atom in nth orbit is (ε0 = permittivity of free space, h = Planck's constant, m = mass of electron and e = electronic charge)


The wavelength of the first line in Balmer series in the hydrogen spectrum is 'λ'. What is the wavelength of the second line in the same series?


The ratio of the velocity of the electron in the first orbit to that in the second orbit is ____________.


In the nth orbit, the energy of an electron `"E"_"n"= -13.6/"n"^2"eV"` for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be ____________.


Which of the following models was successful in explaining the observed hydrogen spectrum?


The acceleration of electron in the first orbit of hydrogen atom is ______.


The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to ____________.


When an electron in hydrogen atom is excited from its 3rd to 5th stationary orbit, tbe change in angular momentum of electron is (Planck's constant: h = 6.62 x 10-34 Js) ____________.


The minimum energy required to excite a hydrogen atom from its ground state is ____________.


If Vn and Vp are orbital velocities in nth and pth orbit respectively, then the ratio Vp: Vn is ______.


An electron of mass m and charge e initially at rest gets accelerated by a constant electric field E. The rate of change of de-Broglie wavelength of this electron at time t ignoring relativistic effects is ______.


The speed of an electron in ground state energy level is 2.6 × 106 ms-1, then its speed in third excited state will be ______.


Let Ee and Ep represent the kinetic energy of electron and photon, respectively. If the de-Broglie wavelength λp of a photon is twice the de-Broglie wavelength λe of an electron, then `E_p/E_e` is ______.

(speed of electron = `c/100`, c = velocity of light)


In Bohr’s atomic model, speed and time period of revolution of an electron in n = 3 level are respectively.


Compute the shortest and the longest wavelength in the Lyman series of hydrogen atom.


The radius of the first Bohr orbit in the hydrogen atom is 0.5315 Å. The radius of the second Bohr orbit in the hydrogen atom is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×